JPH055109Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to an improvement of the loading platform structure of a truck.

(Prior Art) Conventionally, the loading platform structure of a truck, particularly a pick-up truck, has the structure shown in FIG. In other words, a mounting bracket B is passed between two bolsters (horizontal joists) A on the truck frame, and the mounting bracket B is joined to the bolster by spot welding or the like (for example, the method used in Utility Model No. 54-42216)
No.).

(Problem to be solved by the invention) However, in the case of the above-mentioned conventional device, the load at the joint point C with the frame increases as the mounting bracket B becomes longer, and as a result, the connection between the support base A and the mounting bracket B increases. An excessive moment is applied to part D, reducing the durability of joint part D. To prevent this, the thickness of the mounting bracket must be increased and the number of bolsters must be increased, so the total weight of the vehicle is reduced. Moreover, the work becomes complicated and efficiency deteriorates, leading to an increase in costs. Therefore, this invention improves the above-mentioned drawbacks of the conventional one, and it is possible to reduce the moment applied to the joint with the mounting bracket even if the distance between the bolsters is sufficiently spaced, and further,
This is intended to reduce the weight of the mounting bracket itself.

(Means for solving the problem) For this purpose, the above-mentioned mounting method is used in a loading platform structure in which a lightweight mounting bracket with a cross-section in the longitudinal direction of the vehicle is joined in an abutting manner between rail-shaped bolsters provided in the left and right directions that support the floor of the loading platform. Mounting parts that protrude toward the mounting bracket are formed at the joining position of the mounting bracket on the bolster, that is, on opposite side surfaces of the bolster adjacent to each other in the longitudinal direction of the vehicle, and the ends of the mounting bracket are fixed to these mounting parts, respectively. be.

(Function) Since this device has the above-mentioned structure, even if the distance between the bolsters is increased, the mounting part of the bolster protrudes toward the side where the mounting bracket is mounted, so there is no need to increase the overall length of the mounting bracket, and the weight of the mounting bracket increases. Furthermore, since the distance between the attachment part of the mounting bracket to the frame and the bolster joint part can be shortened, the moment acting on the joint part can be reduced.

(Example) This invention will be further explained with reference to an example shown in the drawings. Reference numeral 1 denotes a bolster, and reference numeral 2 denotes a mounting bracket, which is light in cross-sectional shape, and is mounted at the joining position of the mounting bracket 2 of the bolster 1, that is, at the opposing side surface of the bolster adjacent to the longitudinal direction of the vehicle, and protrudes toward the metal attachment side. It is joined to part 3 in a butting manner. 5 is a joint between the mounting bracket 2 and the bolster 1, and 4 is a bolt for fixing the mounting bracket 2 to a frame 6 provided at the center thereof. First, both ends of the mounting bracket 2 are brought into contact with the mounting portions 3 which are pressed and molded from the inside of the bolster 1 at appropriate intervals and protrude toward the mounting side, and are further joined by spot welding or the like. At this time, the length of the mounting bracket 2 is
The distance between the bolsters 1 can be reduced by the amount of protrusion of the mounting portions 3 of the bolsters 1 to which they are connected, and the distance between the bolsters 1 can be maintained longer by using conventional mounting hardware. Furthermore, since there is no need to increase the thickness of the steel plate that constitutes the mounting bracket 2 in order to reinforce it, the load on the bolt 4 for fixing it to the frame is reduced, and the joint between the bolster 1 and the mounting bracket 2 is reduced. 5 can also be reduced. In Fig. 3, the arrow indicates the vehicle running direction, 7 indicates the loading platform,
8 indicates the wheel house.

(Effects of the invention) As mentioned above, since the distance between the bolsters can be increased, the weight can be reduced by reducing the number of bolsters, and the weight can also be reduced by making the mounting brackets shorter and smaller. This makes it possible to improve durability by reducing the load on the joints, and also has the excellent effect of reducing manufacturing costs.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the joint structure of the mounting bracket which is an embodiment of this invention, and Fig. 2a is a
A cross-section, b shows a B-B cross-section, and FIG. 3 shows an exploded perspective view of the loading platform and frame. FIG. 4 is a perspective view of the conventional one. 1...Bolster, 2...Mounting bracket, 3...Mounting part, 4...Fixing bolt, 5...Joint part.

Claims (1)

[Scope of utility model registration request] A lightweight mounting bracket with a cross-sectional shape is provided between a plurality of bolsters provided in the left-right direction that support the floor of the cargo bed, and which connects the opposing sides of the bolsters adjacent in the front-rear direction of the vehicle. A truck loading platform structure in which a mounting part is formed at the mounting bracket joining position so as to protrude toward the metal fitting side, and the joint parts at the front and rear ends of the mounting bracket are joined to this mounting part.